18822312 has 48 divisors (see below), whose sum is σ = 53664000. Its totient is φ = 5943456.

The previous prime is 18822299. The next prime is 18822319. The reversal of 18822312 is 21322881.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (18822319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5512 + ... + 8247.

It is an arithmetic number, because the mean of its divisors is an integer number (1118000).

Almost surely, 2^18822312 is an apocalyptic number.

18822312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18822312 is an abundant number, since it is smaller than the sum of its proper divisors (34841688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18822312 is a wasteful number, since it uses less digits than its factorization.

18822312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13790 (or 13783 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 18822312 is about 4338.4688543310. The cubic root of 18822312 is about 266.0057284839.

It can be divided in two parts, 188 and 22312, that added together give a square (22500 = 150²).

The spelling of 18822312 in words is "eighteen million, eight hundred twenty-two thousand, three hundred twelve".